HD 60803 is a binary star system in the equatorial constellation of Canis Minor, located less than a degree to the northwest of the prominent star Procyon.[3] It has a yellow hue and is visible to the naked eye as a dim point of light with a combined apparent visual magnitude of 5.904.[2] The distance to this system is 135 light years as determined using parallax measurements,[1] and is drifting further away with a radial velocity of +4.6 km/s.[4]

The binary nature of this star system was first noted by O. C. Wilson and A. Skumanich in 1964.[3] It is a double-lined[9] spectroscopic binary with an orbital period of 26.2 days and an eccentricity of 0.22.[6] Both components are similar, G-type main-sequence stars; the primary has a stellar classification of G0V while the secondary has a class of G1V.[3] The masses are similar to each other, and are 28–31% greater than the mass of the Sun.[9] They have low rotation rates which may be quasi-synchronized with their orbital period.[3]

References

  1. ^ a b c d e f g Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d Netopil, Martin (August 2017), "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system", Monthly Notices of the Royal Astronomical Society, 469 (3): 3042–3055, arXiv:1705.00883, Bibcode:2017MNRAS.469.3042N, doi:10.1093/mnras/stx1077.
  3. ^ a b c d e f g h Griffin, R. F. (August 1997), "Spectroscopic binary orbits from photoelectric radial velocities. Paper 135: HR 2918", The Observatory, 117: 208–213, Bibcode:1997Obs...117..208G.
  4. ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  5. ^ Holmberg, J.; et al. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics, 501 (3): 941–947, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511.
  6. ^ a b Kozłowski, S. K.; et al. (July 2016), "Spectroscopic Survey of Eclipsing Binaries with a Low-cost Echelle Spectrograph: Scientific Commissioning", Publications of the Astronomical Society of the Pacific, 128 (965): 074201, arXiv:1602.01238, Bibcode:2016PASP..128g4201K, doi:10.1088/1538-3873/128/965/074201, S2CID 118633671.
  7. ^ a b c d e f g h i Ryabchikova, T.; Zvyagintsev, S.; Tkachenko, A.; Tsymbal, V.; Pakhomov, Yu; Semenko, E. (2022). "Fundamental parameters and abundance analysis of the components in the SB2 system HD 60803". Monthly Notices of the Royal Astronomical Society. 509: 202–211. arXiv:2110.02637. doi:10.1093/mnras/stab2891.
  8. ^ "HD 60803". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-12-13.
  9. ^ a b Tokovinin, Andrei (2014), "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs", The Astronomical Journal, 147 (4): 87, arXiv:1401.6827, Bibcode:2014AJ....147...87T, doi:10.1088/0004-6256/147/4/87, S2CID 56066740.
Allikas: http://en.wikipedia.org/wiki/HD_60803
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